<em>I think the answer to your question is increase.</em>
Has a negative charge and emits energy when it moves to a lower energy orbit from an excited state.
electrons are NOT found in the nucleus but are actually found in rings surrounding the nucleus called orbits.
And while protons and neutrons have reltively the same mass, electrons are about 2000 times lighter.
Also: side note, when electrons move FROM a lower energy orbit INTO an excited state, it absorbs light.
Answer:
17
Explanation:
mass number = # of protons + # of neutrons
Pollution, greenhouse gases, climate change